greenruby blogs

wishing everyone a prosperous new year.

NB IoT For applications that don’t move while in use and only require minimal bandwidth, NB IoT is a great option. It does not support full mobility (i.e. handoff between towers), but it does not need to, because assets are relatively stationary. Uses for NB IoT include street lighting, industrial monitors, parking and utility meters, heavy equipment tracking, and alarm panels. It is important to note that while NB IoT may not be mobile,  it is  transportable. If an asset leveraging NB IoT technology changes locations, connectivity can be re-established with the nearest tower once stationary. Think of a moving company that provides containers as an option for transporting assets. They want to know whether or not the container has been dropped off at the customer’s location and when it has been picked up for delivery. NB IoT can pinpoint its resting location. But what about its “in-transit” status once the pod is mobile? There is an LTE technology for that, too. Ca...

https://blog.capterra.com/16-underground-free-project-management-tools/

MongoDB is a well-known NoSQL database that offers high performance, high availability, and automatic scaling. in a high traffic and data volume scenario, such as collecting and collecting raw data from IoT devices, MongoDB can be the most obvious choice as the storage engine. This article  has the most clear steps in setting up MongoDB, as well as configuring and enabling authentication.

C++ doesn’t let functions return several values. But, what if, you just need that function to return multiple values without using a struct type. this article explains the new ways of returning multiple values using standard c++ types. https://www.fluentcpp.com/2017/11/10/strong-types-multiple-return-values/

Here is a very detail article about Server-send events . there are code examples and awesome descriptions on the mechanism and logics behind server-send event polling. https://www.html5rocks.com/en/tutorials/eventsource/basics/

The OWASP Top Ten is a list of the 10 most dangerous current Web application security flaws, along with effective methods of dealing with those flaws. OWASP (Open Web Application Security Project) is an organization that provides unbiased and practical, cost-effective information about computer and Internet applications. OWASP ( https://www.owasp.org/index.php/Main_Page ) is a great resource of presentation files, videos, and articles for developers and coders to understand the risks and vulnerabilities when developing web applications.